Radiator



March 9 192e. 1,575,915

A. H, HART RADIATOR Original Filed May l, 1922 2 Sheets-Sheet l *TESL YA TEEL gnou/1to1:

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2 Sheets sheet 2 0 g-FgE/lv 1 1922 mi um um nu @UME - i@ DI@ PatentedMar. 9, 1926.

UNITED STATES PATENT 'oFF-lcs.

AUSTIN H. HART, F MONTCLAIR, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO ROME RADIATION COMPANY, INC., A CORPORATION OF NEW YORK. l

RADIATOR.

Application led May 1, 1922, Serial No. 557,742. Renewed January 30,1926'.

To all whom t may concer/n.'

Be it known that I, AUSTIN H. HART,

a citizenl of the United States, residing at Montclair, in the county ofEssex and State of New Jersey, have invented new and useful improvementsin Radiators, of which the following is a specification.

My invention relates to heating devices and more particularlyto methodsfor pro- 1@ ducing radiators .by electro] tic process, and

the product thereof. An o ject of my improved process is to produce adevice of the class described more economically than heretofore, theproduct itself being of a superior quality than has been possible ofattainment by methods heretofore practiced in this art.

The radiator produced by my process in its preferred form comprises anetwork of open chambers or tubes constituting a continuous singlechamber characterized by numerous angular sections, considered in itsmost general aspects, and features that are especially advantageous whenconsidered more particularly in connection with its de# tailedconstruction.

Broadly described my process includes in the reliminary stages thereofmeans for forming a core of fusible electroconductive material forelectrolytic ydeposition thereon, together with specially designedprovisions for suitably supporting the same within the electrolyticbath. y

Another special feature of my invention consists in means forreinforcing the mate- 'rial where connections are to be made byintroducing a threaded bushing and supportin it suitably upon thefusible core so that a ter the shell constituting the finished radiatorhas been formed thereon, the bushing will be in such close uniontherewith that it practically constitutes an integral part' of thestructure of theradiator.

The `apparatus employed in connection with the above described steps,when more particularly described, as will presently be seen, forms aconical cavity in the fusible core at the point where electrical contactis required, thereby creating an enlarged contact surface for moreeffectually connecting the core at its respective opposite ends to theelectrolytic current. Other objects will appear in connection with thepresent specication of my improvement. Having reference to the drawings,which relate to the preferred form of the product of my improved processand the apparatus employed therein, Figure l is a plan view of a pair ofmolds for casting thepfusible core, the upper member partially shown inposition thereon.

Fig. 2 is a transverse sectional view of the die members shown in Fig.1.

Fig. 3 is a partial view of the fusible core as formed in the dies shownin Fig. l, with a threaded end piece attached thereto.

Fig. 4 is a side View of the threaded lug with tlie centering end havingjust een withdrawn from the end piece 4after the fusible core has beenformed in union therewith.f

Fig. 5 is a fractional sectional View of the clectrolytic vat showingthe fusible core held in position therein in process of deposition.

Fig. 6 is a medial sectional view of the lower left hand corner of theradiator showing the detail of the connection of the supporting means,during the depositing step.

Fig. 7 is a similar view of the portion of the radiator shown in Fig. 6with the connecting member and fusible core removed.

Fig. 8 is a side elevation of a completed product.

Fig. 9 is an enlarged sectional detail of the sa connecting meansforpouring the fusible material in thc dies to form the core.

Fig. 10 shows thc application of the plug center pin apparatus inapplying the bushing to the side of the core for similarly forming thethreaded extension from the side of the radiator.

Fig. 11 is a dissociated View of the, plug connecting means shown inFig. 10.

For a detailed description of the product .of my invention andapparatus, employed' n tion with my improved method, in which I willdescribe the details of the parts employed in attaching the bushing tothe shell deposit composing my finished product. I n

Having reference to the drawings, the numeral l represents the core boxof the apparatus preferably employed in connecbox or die is cast a corel5 of fusible material for which ll preferably use the metal lead,because of ,itsl relatively low fusing point combined withcorrespondingly high electric conductivity. To produce the form ofradiator illustrated in the drawings (see Fig. 8), the corebox is made,up of two similar plates 2 and 3 (see Figs. 1 and having similarly andoppositely disposed m net like formation, semicircular rooved channels 5and 6 to form when tie side plates are secured together a latticelikeconstruction as if composed of a plurality of interconnecting bars inrectangular form within an oblong frame.

Upon the core 15, as will presently be described more in detail, the'shell 30, which forms the radiator product of my invention, is formedhaving suitably placed at its opposite ends connecting means in the formof extensions or bushings 10\ with threaded openin s 11 into which areinserted the c orrespon ingly threaded ends of the respective supply anddischarge pipes of the circulating heating or coo ing medlum to beemployed therein. To provide these threaded openings, one of which isshown in Fig. 7, I first prepare a shortlength of pipe or bushing 10threaded in the manner above described and temporarily support the samebetween members 2 and 3 of the core box in semicircular recesses 7 whichare formed adjacent the channel 5 and have similar grooved extensions 7a of reduced radius continuing through to the outside portion of themembers 2 and 3; the extensions 7a are adapted to hold the shank 12a ofthe threaded plug 12 upon which is the threaded portion 13, and upon theshouldered head 13EL is a suitably tapered centering pin 14 projectingfrom the threaded portion 13 as shown inFig. 4. The diamef er of theshouldered head 13 is the same as the outside diameter of the bushin 10which in turn is preferably of the same iamete'r as the members 15composing the rectangularframe of the core. v Preparatory to casting thecore of the bilishing 10 is screwed upon the threaded u gbolgit half thelength of the bushing piece and in this position the plugs with bushingsattached are first inserted in the recessed' portions 7 and 7 i of thelowermost die mem- 13, which should extend inwardly` ber 2, as bestshown in Figure 1, whereby it will be seen that when the members 2 and 3are secured together and the fusible core 15 is poured therein, thematerialwill partially fill the bushing held in the position described,forming concentrically around the centering point 14 as shown in Fig. 3;

The metal to form the core 15 is conducted i from the melting potinto-the dies through the opening 21 at the edge thereof, which consistsof two correspondingly semicircular grooves or channels in the members 2and 3 which when secured together as shown in Figs. 1 and 2 forms acommunicating duct leading into the channels 5 and'G. lln order tofacilitate the pouring process ll prvide 4connecting means (see Figs. 1and 9) for securely holding the tube of themelting pot (not s own indrawings) from which the fusible metal is conveyed to the mold. 'lhis inthe form shown consists of the circular head 20 havingconcentrica'lly-stepped recesses 22 surrounding the orifice 2l andforming three corresponding concentric annular faces 22a against whichare adapted to rest the correspondingly and oppositely disposed annularfaces 27a 29 through which the fusible metal is conveyed from themelting pot.

Upon the circular head 20 at suitable intervals around its periphery arepivotally attached in the form-shbwn four latching hooks 25 upon screwsV23 in said head, which hook ends 25 are adapted to engage the laterallyprojecting pins 26, as shown-in the drawings,vthe correspondingly`annular faces 22a and 27a are held in close contact one against theother.

Upon the core member 15 having been poured and chilled, the `members 2and 3 are separated, and thereupon the plugs 12 are withdrawn, a yholebeing provided transversely through the Shanks 12 for the insertion of awrench or other instrument to facilitate the unscrewing of the plug 12,the bushing being securely attached to the core in the manner abovedescribed. The gate of the fusible core is then cut awayy and thesurface from which it has been removed is made to conform substantiallyto the general-contour of that portionV of the core.

The foregoing steps conclude-the preliminary stages of my process andthe concluding steps relate principally to the formationy 1n theconnecting collar V 2 7 into which is suitably attached the tube of theradiator shell upon the core member.

The core is prepared for immersion in the v jelectrolytic bath byinsertin within the bushing extensions 10 the hoo s 40 and 41,

the former the shorter in length, 'to connect with the positive pole ofthe battery or other source of electric current, the longer hoolr 41 tcbe likewise attached to the oppositeA `end of the core member toconnectwith the negative pole in the circuit. y p

I provide the usual electrolytic tank of suiilicient dimensions toreceive one or more cores 15 suspended therein, as shown in Fig. 5, themembers 40 and 41 being suitably hooked at the top to hang upon thecorresponding side walls of the tank, as shown.`

members 40 and 41, the points of each hook v being tapered to correspondwith the form of centering pin 14 of-the plug 12; that is to say,the-points of the hooks 40 and 41 thus formed are not only adapted tofit snugly into the correspondingly tapered conca-vities formed in thecore member by the plug 12 but also present enlarged surface contact.After the screw has been inserted into the bushing 10 sufficiently farto have its shouldered head resting in close contact upon the outer faceof the bushing, the threaded end of the S-shaped hook rods 40 and 41,which are formed of metals possessing low resistance to-gthe passage ofthe electric current are inserted through the threaded orifice intheinsulating member 50, the opposite end of the hooked members beingcurved as has been seen to engage the top surface of the respectivesides 46 of tank 45. Suitable coverings 2 preferably of soft rubber,encase the greater length of the hook rods, the protecting coat beingemployed in the usual manner to prevent erosive contact with theacidulated electrolyte and being brought into immediate contact with thehead of the screw member 50.

It will thus be seen that the bushings 10 although previously formed forinsertion therein, are by my process made lfor all practical 'purposesintegral with the radiator structure and furthermore by means of thethreaded centering plugs 12 while being partially filled by the contentof the fusible core, a sufficient portion of each of the internallythreaded orifices of the bushings is. left free to receive thecorrespondingly threaded insulators 5() to prepare vthe core forintroduction. to the electrolytic bath.

It will be further seen that the form of the screw members 50 permitsthe under face of the shouldered head 51to be brought into immediatecontact with the bushing 10 to prevent objectionable threaded interiorthereof.

I claim: s y The method of forming tubular shells for depositing in theconnect-ion to conduits comprising preparing al core of 'material havingal relatively low fusing point, attaching exposedmtal bushings to saidcore at points corresponding to those where connections are desired,electroplating a metallic coating upon the core and bushings to thedesired thickness, and then removing the core by fusing it below thefusign point of the bushing and electrodeposited metal, thereby leavinga shell of the electrodeposited metal reinforced by the bushings whereconnections'are to be made.

In testimony whereof I have hereunto set, my hand. y

AUSTIN H. HART.

